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Topic Review (Newest First)
04-20-2012 06:19 AM
CNC BLOCKS NE Some GM block had a press in plug on the rear drivers side near the oil sending unit most shops do not remove that plug and there is no way to clean that oil galley out !!!!
04-19-2012 07:43 PM
39chevy Forgot, what galley brush kit do u also recommend, and where to purchase one, thanks, Dana
04-19-2012 07:39 PM
39chevy
Advise......

Getting ready to get block cleaned etc. Should I let the machine shop install my freeze plugs and galley passage plugs? Sounds like I really shouldn't and instead clean them out again according to u guys, Set me straight so I can do the best for me. Thanks Dana
07-26-2011 11:33 AM
67-4-fun
Quote:
Originally Posted by CNC BLOCKS NE
A score like that is from debris and its always a good idea to plug the oil filter bypass and use a good filter. And make sure the plug under the rear main cap installed.

If you have one of he blocks with the press in plug under the left head on the rear of the block that has to be removed to clean that galley porperly.
not sure on that, its a 1967 327 block if thats of any help.. I'll just have to look and see what your talking about.. I used a good filter {wix} The oil was high quality { lubercation industries} I think the post above was right about debre from machining that didnt get cleaned. This engine had no more than 12-15 miles on it, it sit more than anything, now i have the chance to do something with it, so id thought on refeshing it up since it sat alot
07-26-2011 06:34 AM
CNC BLOCKS NE A score like that is from debris and its always a good idea to plug the oil filter bypass and use a good filter. And make sure the plug under the rear main cap installed.

If you have one of he blocks with the press in plug under the left head on the rear of the block that has to be removed to clean that galley porperly.
07-26-2011 12:50 AM
FmrStrtracer Clean your block and crank with soap and water before final assembly. Use wire brushes that reach thru all the passages. The damage to your bearings is from left over crap from the machining process that got flushed thru your oiling system. even if the machinist cleans the block, you should clean it again. Most shops dont do a very good job of cleaning cranks and blocks unless they are assembling it themselves.
You should check that crank clearences with micrometers, not plastigage.
07-26-2011 12:15 AM
67-4-fun oh i agree.. i will with the new bearings
07-26-2011 12:12 AM
Clint Cummins Most definitely want to plastigage those journals to see if there is a concern there.

That's amazing the journals were not damaged.
07-25-2011 11:58 PM
67-4-fun yes crank journals are fine, there was nothing in the oil pan, i already threw away the oil filter long before I knew this.. Im pretty sure im going ahead with new bearings anyway to be smart about it , since i got it taken down to have the block decked, I would be better off
07-25-2011 11:28 PM
Clint Cummins hey,

I say yes to the new rod bearings.

Are you sure the crank journals are okay?

Did you cut open your used oil filters to see what you could find?
07-25-2011 11:19 PM
67-4-fun
rod bearing take a look

I was checking my rod and main bearings, all bearing looked good with normal scuffing, other than this one and one other rod bearing that had a similar marking down the center only lighter and not as big.. It looks like a dirt fragment or something groved the bearing.. whats your guys opinon? should i put new bearings in? Had thought about doing so after seeing this rod bearing.

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